9009390091 has 8 divisors (see below), whose sum is σ = 10273150944. Its totient is φ = 7827162240.

The previous prime is 9009390011. The next prime is 9009390109. The reversal of 9009390091 is 1900939009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9009390091 - 2¹¹ = 9009388043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9009390011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20383015 + ... + 20383456.

It is an arithmetic number, because the mean of its divisors is an integer number (1284143868).

Almost surely, 2^9009390091 is an apocalyptic number.

9009390091 is a deficient number, since it is larger than the sum of its proper divisors (1263760853).

9009390091 is a wasteful number, since it uses less digits than its factorization.

9009390091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40766501.

The product of its (nonzero) digits is 19683, while the sum is 40.

The square root of 9009390091 is about 94917.8070279755. The cubic root of 9009390091 is about 2080.8069855481.

The spelling of 9009390091 in words is "nine billion, nine million, three hundred ninety thousand, ninety-one".